Elevator-door-operating equipment



Jan. 10, 1928.

.O. P.- M GEE ELEVATOR DOOR OPERATING EQUIPMENT Filed "F9194. 1926 5 Sheets-Sheet l Jan. 10, 1928.

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ELEVATOR DOOR OPERATING EQUIPMENT Filed Feb. 4 1926 5 Sheets-Sheet 2 Jan. 10, 1928.

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ELEVATOR DOOR OPERATING EQUIPMENT "Fild Feb. 4. 1926 5 Sheets-Sheet 5 Jan. 10, 1928. 1,655,733

- o. P. MOGEE ELEVATOR noon OPERATING EQUIPMENT Filed Feb. 4. 1926 5 Shets-Sheet '4 Jan. 10, 1928. 1,655,733

0. P. M GEE ELEVATOR DOOR OPERATING EQUIPMENT approximately Patented Jan. 1%, @928.

it "r NT OFF lC OSCAR P. IVIGGEE, OF DALLAS, TEXAS, ASSIGNOR OF ONE-HALF T0 WILLIAM A.

SEDWICK, OF DALLAS, TEXAS.

ELEVATOR-DQOR-OPERATING EQUIPMENT.

Application filed February 4, 1926. Serial No. 85,875.

llhis invention relates to new and useful improvements in elevator door operating equipments.

The object of the invention is to provide certain improvements in the apparatus illustrated in my Letters Patent No. 1,568,461 issued January 5. 1926.

A particular object of the invention is to provide a motor driven door opening and closing mechanism carried upon the elevator car, in combination with a latch and door moving element of a simple naturev located at each door.

An important object of the invention is to provide an operating shoe carried by the mechanism on the elevator car and normally spread open so as to pass each doormoving element without contact therewith, thus eliminating noise, but arranged to be closed when it is desired to engagesaid element and open a particular door.

Another object of the invention is to simpliiy the structure necessary to carry outv the invention, when compared to my copending application.

A further object/of the invention is to provide a pair of motor switches connected in series with the operatingmotor,carried 'on-the car. and a controlling switch in the car also connected in said series circuit, to.- gether with mediums at each floor landing for operating said motor switches.

' A further object of the invention is to provide a combined unlatching and door 4 moving device of a simple nature.

Another object is to provide electrically ,operated elevator doors arranged so that they cannot be opened until the. car floor is flush with the floor landing or nearly so.

Another object is to provide a trip switch operated by the door actuating means to break the car circuit when the doors are opened and requiring that the doors be fully closed before the car circuit is restored.

A construction designed to carry out the invention will be hereinafter described, together with other features of the invention.

The invention will be more readily understood from a reading ofthe following specification and by reference to the accompanying drawings. in which an example of the invention is shown, and wherein;

of the same with the Fig. 9 is an enlarged cross-sectional view taken on theline 9-9 of Fig. 2,

Fig. 10 is an elevation of the trip switches, Fig. 11 is a View partially in elevation and partially in section of the cut-out switch.

Fig. '12 is a cross-sectional view of the drive sprocket and its friction clutch,

Fig. 13 is a detail of one of the track supports,

Figs. 14:. 15 and 16 are diagrammatical views of the various positions of the trip switches. and

Fig. 17 is a circuit diagram.

In the drawings the numeral 10 designates an electric motor suitablv mounted on top of the-elevator car 11. The motor includes a suitable transmission 12 for driving a sprocket 13 disposed at right angles to the end of the motor. An elongated angle sill 14: is mounted on top of the car substantially parallel to'the armature of the motor and one end adjacent the motor a standard 15 is mounted on the sill; while another 16 is supported on the other end of the sill. A

central standard 17 is also mounted on the sill. Each of the standards is subs antially the same as is illustrated in Figs. 1, 2. 4;. and 13. A longitudinal track bar 18 is fastened to the upper ends of the standards (Figs. 4

and 13) so that the flat sides of thebar are vertical and the upper and lower edges provide tracks. 1

At the end of the bar opposite to the motor a second sprocket 19 is journaled and sup orts one end of an endless sprocket chain 20 having its opposite end driven and supported by the sprocket 13. The sprocket mounted upon the reduced squared portion 23 of the shaft and is made fast by a lock nut 25. The plate has a friction ring 26 such as fibre, on its inner side engaging an annular race 27 in the side of the sprocket. It will be seen that if the chain is held the sprocket 13 will remain stationary and the shaft 12 will turn therein, but under normal conditions the friction ring will rotate the sprocket and thus drive the chain.

At one end the carriage has an upright.

shoe wing 28 integral therewith. A boss 29 (Figs. 3 and 4) is cast upon the front of the carriage and a plate 30 is fastened on this boss so that its upper and lower ends project beyond the boss to form tracks for a slide 31 having longitudinal hangers 32 engaging over said tracks. A complementary shoe wing 33 is formed integral with the inner end of the slide and is movable toward and from the wing 28 to open and close the shoe as the slide is moved. For

I actuating the slide I provide a crank shaft 34 (Figs. 3, 4 and 5) journaled in the carriage and extending transversely therethrough as well as extending through the plate 30 and a slot 35 in the slide. A crank arm 36 fastened on the front end of the shaft contiguous to the face of the slide is pivoted to one end of a link 37 and has its opposite end journaled on a stud 38 mounted on the slide. By rocking the crank shaft 34 the arm 36 is swung down (dotted lines Fig. 3) and the link thus pulls the slide 31 and opens the shoe. 7

It is necessary to open and close the shoe because of its engagement with the door latches, one of which 39, is shown in Figs. 2, 5, 8 and 9. Each latch 39 is right angular in plan and has an arm 40 engaging in the shoe between the wings 28 and 33. The latch is pivoted at the intersection of its members between the cars 41 (Figs. 2 and 8) projecting from a vertical plate 42 mounted on bolts 43 (Figs. 8 and 9) laterally adjustable in slots 44 in a standard 45 and held by nuts 46. The standard is mounted transversely of a bracket 47 fas tened on the inner and top sides of an elevator floor landing door 48. This structure is duplicated at each fioor landing. The plate has a horizontal yoke 49 directed longitudinally toward the shoe (Figs. 2, 8 and 9), and receives 'thearm 40. A bow s ring 50 riveted at its outer end to the back of the arm engages in the yoke and normally tends to swing the arm from the yoke.

The latch 39 is urged by the spring 50 to engage over a beveled keeper 51 which is longitudinally adjustable in a bracket 52 mounted on the wall 53 of the elevator shaft or wall. The keeper is fastened in position by a set screw 54 and is adjustable toward and from the latch. It will be seen that in order to open the door the latch 39 and its arm 40 must be swung to withdraw the latch from the keeper. To do this the end of the arm 40 must have sufficient clearance in the shoe to undergo an initial swing prior to the initial movement of the door and upon the initial movement of the carriage 21. In view of this the shoe 33 is made movable to give the arm clearance.

In order to open the shoe a trip lever 55 is mounted on the rear end of the shaft 34 (Fig. 4). A spring pressed plunger 56 mounted in a housing 57 on the rear of the carriage 21 engages flat seats 58 and 59 on the lever to hold it in its adjusted positions. A longitudinal angle bar 60 is mounted on the standards 15, 16 and 17 substantially parallel to the track bar. A trip pin 61 is fastened in said bar 60 and projects into the path of the lever 55. Upon the initial movement of the carriage 21 the lever 55 is swung by the pin 61. This moves the fiat seat 58 from under the plunger 56, but brings the seat 59 thereunder, whereby the lever is held in the tripped position.

lVhen the lever 55 is swung the shaft 34 is rocked, counterclockwise, whereby its arm 36 is swung downward (Fig. 3) and by means of the link 37'pulls the slide 31 to the left (Fig. 3), so that the shoe 33 is moved away from the shoe 28. Thus when the motor 10 is energized the shoes are spread and the arm 40 of the latch 39 may be freely swung by the shoe 28 as the carriage 21 is moved along the track bar 18 by the chain 20. The initial swing of the latch 39 disengages it from the keeper 51.

The carriage 21 has a rearwardly extending bracket 62 provided with a slot 63 in which a transverse pin 64 is adjustably mounted. On the angle bar 60 I mounta Inn switch box 65 (Figs. 6 and 7). r In this box is secured an insulating base plate 66 of fibre or'other suitable material. ()n this plate are mounted two pairs of contact standards 67 and 68 respectively. On a transverse rock shaft 69 a switch bar 70 is fastened at its center. This bar has a pair of contact wings 67 at one end and a pair of contact wings 68 at its opposite end. lVhen one end of the bar is swung down the wings 67' restupon the spaced standards of the pair 67, thus closing the circuit across the same; while upon swinging the opposite end of the .bar the contact wings 67 are lifted thus breaking said circuit and through the standards 68.

the wings 68 are swung down upon the.

standards of the pair 68, thereby closing the circuit therethrough.

For swinging the bar I mount a bell crank lever on the shaft and this lever has arms 71 and 72 at substantially right angles to each other. The lever has a quadrant 73 extending between its arms and a stud 74 projects from the lever midway between said arms. The lever is fastened on the shaft 69 so that when the wings 68' are engaged with the standards 68, the arm 71 will depend vertically and the stud 74 will be to the right (Fig. 6) of the vertical axis of said arm. A coiled spring 75 has its upper end secured to a. stud 7 6vertically alined with the axis of the arm 71 and the shaft 69 and carried by a bracket 77 mounted on top of the box'. The spring will exert an upward pull thus holding the wings 68 incontact with the standards 68. But when the'arm 71 is swung to the left the arm 72 will be brought into a vertical position and the stud 74 will be swung to the left of the vertical axis of said arm, the spring thus'holding the wings 67' in contact with the standards 67. Normally the arm 72 is in this vertical position (Fig. 1) and the circuit is closed through the standards 67, to the car motor (not shown) therefore upon the movement of the carriage 21 the pin 64 engages the arm 72 and swings it to the right, thusswinging the bar 70 to open the power circuit and close the reversing clrcuit The box 78 of a cut-off switch is mounted on the end of the bar 60 adjacent the sprock- -et 19. This box (Fig. 11) has a pair of contact standards 79 substantially the same as the standards67 and 68. A'rock shaft 80 extends transversely through the box and has a switch ba'r81 centrally fastened thereon in the box. This bar has contact wings 79 at one end and is adapted to rest at its opposite end, when swung, upon a stool 82'.

. As is shown in Fig. 11 the wings 7 9 are in contact with the standards 79.

On the end of the shaft 80 outside of the box is fastened a lever quadrant 82 connecting arms 83 and 84 which are disposed at right angles to each other. A coiled spring 85 has its lower end fastened to a stud 86 7 standards 79.

To automatically control the door operating circuit, ll mount an upright angle bracket 89 on the end ofgthe track bar 18;

A switch box 90 is fastened on the lower end of the bracket, while a similar switch box 91 is fastened on the upper end of said bracket (Figs. 1, 2 and 10). The lower box has a pair of suitably insulated contact standards 92 mounted to be engaged by one-end of a swinging switch bar 93. When the bar is swung from the standards itsopposite end rests upon a stool 94. The bar is centrally fastened on a rock shaft extending through the front of the box.

A lever quadrant 96 is fastened on the outer end of said shaft and has a pair of tripping arms 97 and 98, respectively spaced at right angles to each other. A coiled spring-99 has its lower end attached to a stud on the, quadrant between the said arms, while its outer end, is supported by a stud 101 carried by a bracket 102 on the side of the box. When the switch bar 93 is in en-- gagement with either the'standards 92 or the stool. 94, the stud 96 lies either below or above the center of the shaft 95 and the stud 101 being horizontally alined with said shaft, it will be seen that the-spring 99 will thus exert a pull, whereby the bar'93 is held in the position to which it is swung- In the box 91 the parts of box 90 are duplicated and are indicated by the numerals 92', 93, 94, 95, 96', 97, 9 100', 101', and 102' respectively. I

In Figs. 14 to 17 inclusive I have shown circuit diagrams. A main power circuit wire A (Fig. 14) leads to the motor 10, while a second circuit wire B leads to one of the standards 92 of the box 91; the other standard 92 being connected by a wire C with one of the standards 92 of the box '90. A circuit wire D leads from the other standard 92 of box 90 to a switch lever 103 in the elevator car. A- circuit wire E leads from one side of the car switch to one of the standards 79 of the box 78, while a wire F leads from the other standard 79 to the motor lO. From the other side of the car switch 103 a wire Gr leads to one of the standards 68 of the box 65 and a wire H leads from the other standard 68 to the-reversingcontaet of the motor 10. Wires J and K lead from the standards 67 to the car operating motor (not shown). Ateach floor landing a horizontal tripping finger 104 (Figs. 2 and 8) projects from the bracket 52 into the path of the lever arms 97, 98, 97 and 98 for swinging the latter as the car moves up and down the elevator shaft.

The operation is as follows:

The switch arms 72, 83, 97 and 97 are normally in the positions shown in Figs. 1, 11

and 15.. If the door is not to be opened and the floor is to be passed the finger 104 suc- .swings them, whereby the arms 98 and 98' are left in the path of the finger for the return trip or vice'versa. It will be seen that switch bars 93 and 93' work oppositely and the'circuit is always closed through one Lil of the boxes 90 or 91. However as long as the switch lever 103 occupies a neutral position no current will pass to the motor 10.

If it is desired to open a door the car is stopped after the finger 104 has engaged the arm 97 and swung the same, whereby the bar 93 of the box 90 is engaged with the standards 92 as is shown in Fig. 16, the circuit thus being closed over wires B, C and D to the switch lever 103. To open the door said lever is swung to the right (Fig. 17) and the circuit to the motor 10 is closed over the wire E, standards 79 of switch 78, and wire F to the motor. The motor 10 being energized in'iparts rotation to the sprocket wheel 13 which causes the chain 20 to travel, where by the carriage 21 is set in motion.

Upon the initial movement of the carriage the lever (Fig. 4) engages the pin 61 and this swings the lever so that the shaft 34 swings the arm 36 (Fig. 3) downwardly, thus sliding the wing 33 by means of the link 37. As the carriage 21 starts its movement the wing 28 swings the arm 40 of the latch 39, whereby the latter is withdrawn from the keeper 51 (Fig. 2). The spreading of the shoe wings 28 and 33 permits the arm 40 to swing. Also upon the initial movement of the carriage the pin 64. (Figs. 2 and 5) engages and swings the arm 72 (Figs. 6 and 7) whereby the switch bar is swung to lift the wings 67 from the standards 67, thus opening the power circuit, and to cause the wings 68 to engage the standards 68.

The door is opened by the movement of the carriage to the right and at the end of the movement the pin. 64 engages the arm 83 of the switch box 78 (Figs. 1 and 11) and swings the bar 81, thus breaking the circuit to the motor 10 and preventing further movement of the door. Should the parts get outof time or any other interference be encountered, the friction clutch 2426 (Fig. 12) will permit the drive shaft 12 to turn without actuating the sprocket wheel 13 and parts connected therewith.

To close the door the. switch lever 103 is swung to the left to close the circuit from the wire D over wire G to standards 68 and wire H to the motor 10, which thus being reversed, actuates the chain 20 and operates the carriage 21. As the carriage starts return or door-closing movement the pin 64 engages the arm 84, thus swinging the bar 81 to its normal position. As the carriage reaches the endof its return trip, the pin-64 engages the arm 71 and swings the bar 70, thus opening the circuit of the motor 10 and closing the circuit to the car motor over the wires J and K. At the same time the pin 61 is engaged by the lever 55, whereby the arm 36 is swung and the wing 33 is moved forwardly so as to swing the arm 40 and cause the latch 39 to engage the keeper 51.

Various changes in the size and shape of the difl'erent parts, as well as modifications and alterations may be made within the scope of the appended claims.

What I claim, is:

1. In an elevator door operating apparatus, means located on the floor landing door for opening and closing the same, electrically operated means carried by the car and located to engage the door actuating means at the floor landing only, the electrical circuit of the operating means being normally open, a pair of circuit controlling switches carried by the car and having contacts connected in the circuit of the operating means, and means at each floor landing for operating said switches.

2. In an elevator door operating apparatus, means located on the floor landing door for opening and closing the same, electrically operated means carried by the car and located to engage the door actuating means at the floor landing only, the electrical cir cuit of the operating means being normally open, a pair of circuit controlling switches carried by the car and having contacts connected in the circuit of the operating means, and means at each floor landing for operating said switches, one of said switches being normally closed and the otherswitch being normally open.

3. In an elevator door operating apparatus, means located on the floor landing door for opening and closing the same, electrically operated means carried by the car and located to engage the door actuating means at the floor landing only, the electrical circuit of the operating means being normally open, a pair of circuit controlling switches carried by the car and having contacts connected in the circuit of the operating means, means at each floor landing for operating said switches, one of said switches being normally closed and the other switch being normally open, and means for opening the circuit to the operating means when the door is opened.

4:. In an elevator door operating apparatus, means located at the floor landing door for opening and closing the same, electrically operated means carried by the car and located to engage the door actuating means at the floor landing only, the electrical circuit of the operating means being normally open, a pair of switches carried by the car for closing said circuit when the operating means engages the dooractuating means, and a switch actuated by the operating means for breaking the power circuit to the car when the doors are opened.

5. In an elevator door operating apparallb tus, a door actuating member movably mounted on the elevator'ear, a motor for operating said member, a door latch at each door having an operating element and carried by the door, the actuating member enried by the door, the actuating member engaging the operating element of the latch,

gaging the operating z the circuit of said motor,

a pair of controlling switches connected in one of said switches being normally closed and the other normally open, means at each floor landing for operating the switches, and a switch in the elevator car connected in the motor circuit.

7. In an elevator door operating apparame, a door actuating member movably mounted on the elevator car, a motor for operating said member, a door latch at each door having an operating element and carried by the door,rthe actuating member engaging the operating element of the latch, a

pair of controlling switchesconnected in the circuit of said motor, one of said switches being normally closed and the other normally open, means at each floor landing for operating the switches, a switch in the elevator car connected in the motor circuit, -and a reversing switch connected with the motor and the car switch and located to be operated by the actuating member.

8. In an elevator door operating apparatus, a door actuating member movably mounted on the elevator car, a motor operating said member, a door latch at each door having an operating element and carried by the door, the actuating member enelement of the latch, a pair of controlling switches connected in the circuit of said motor, one of said switches being normally closed and the other, normally open, means at each floor landing for operating the switches, a switch in the elevator car connected in the motor circuit, a reversing switch connected with the motor and the car switch and located to be operated by the actuating member, and a switch connected in thepower circuit of the car and located to be operated by the actuating member upon its initial movement.

9. As a sub-combination in an elevator door operating apparatus, a longitudinal track bar, a carriage movable on said bar, an electric motor, a driving connection between the motor and the carriage, a double switch having circuit connection on one side with the reversing contact of the motor and'having circuit connection on the other side with the elevator power circuit, means actuated by the carriage for alternately operating forsaid switch, a cut-out switch having actuating means in the path of the carriage, a car switch having one side connected with the cut-out switch and the other side connected with the reversing contact of the switch, one of said control switches being normally opeirand the other being normally closed. v 11. In an elevator door operating appaelement, of a track for mounting on an elevator car, a carriage mounted to slide on the track, astationary shoe wing on the carriage, a slide mounted on the carriage having a shoe wing, means on the carriage for acturatus, the combination with a door actuating ating the slide to separate the wings, a fixed trip for operating said slide actuating means when the carriage 1S moved, an endless chain for reciprocating the carriage and free from connection with the slide operating means, a sprocket for driving said chain including a friction clutch, and a motor for revolving said sprocket.

12. In an elevator door operating apparatus, the combination with a door actuating element, of a track for mounting on an elevator car, a carriage mounted to slide on the track and provided with means for engaging the door actuating element, means for reciprocating the carnage, an electric motor for int) operating said reciprocating means, a pair of controlling switches carried by the elevator car, each comprising apair of spaced contacts, one contact of each switch being connected with one of the contacts of the other switch and the other contact of each switch having electrical circuit connection with the motor, each switch including actuatom and a bar for connecting the contacts thereof, and means located at each floor landv ing for operating the actuators of said switches.

13. In an elevator door operating apparatus, a longitudinal track having means for mounting it on an elevator car, a carriage slidable on the track longitudinally thereof, a shoe on the carriage for receiving-and engaging a door opening and closing member projecting into the path of said shoe, the shoe comprising a stationary wing and a movable wing, a member movably mounted on the carriage to spread the wings upon an initial opening'movement of the carriage,

means for actuating the Wing moving member, and stationary means for operating the actuating means upon an initial movement of the carriage to spread the wings and for again engaging the actuating means to contract the wings at the end of the closing movement of the'carriage.

1%. Inv an elevator door operating apparatus, an elongated track having means for mounting it on an elevator car, a carriage slidahle on the track and having a slide-way on its front, a slide mounted on the slideway of the carriage and having a vertical shoe wing, a rockingmember on the carriage, a connection between the rocking member and the slide for actuating the latter, a swinging member on the rocking member for operating the latter, a fixed tripping element in the path of the swinging member.

In testimony whereof I afiix my signature.

OSCAR P. MeGEE. 

